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    • 71. 发明申请
    • MODIFICATION OF XYLAN
    • XYLAN的修改
    • US20130233501A1
    • 2013-09-12
    • US13703223
    • 2011-06-07
    • Willem Heber Van ZylAnnie Fabian Abel ChimphangoJohann Ferdinand Gorgens
    • Willem Heber Van ZylAnnie Fabian Abel ChimphangoJohann Ferdinand Gorgens
    • D21H17/24
    • D21H17/24C09D105/14C12P19/04C12P2203/00C12Y302/01055C12Y302/01139D21C9/005D21H11/20
    • The invention provides a method of modifying soluble xylan which contains glucuronic acid and/or arabinose side chains so that it can be adsorbed onto other substrates. The method includes the steps of enzymatically modifying the xylan by selectively removing glucuronic acid and/or arabinose side chains from the xylan with α-D-glucuronidase and/or α-L-arabinofuranosidase, and allowing the modified xylan to adsorb onto the substrate. The substrate may be a cellulosic substrate like pulp or paper or a non-cellulosic substrate. The enzymes are able to remove a sufficient number of the xylan side chains so as to decrease water solubility of the xylan, induce xylan precipitation and allow adsorption of the xylan onto other substrates. A pulping process which incorporates modification of xylan and adsorption onto cellulosic material is also provided, as are products which contain the modified xylan.
    • 本发明提供了一种修饰含有葡糖醛酸和/或阿拉伯糖侧链的可溶性木聚糖的方法,使其可以吸附到其它底物上。 该方法包括以下步骤:通过用α-D-葡糖醛酸糖苷酶和/或α-L-阿拉伯呋喃糖苷酶选择性地除去来自木聚糖的葡糖醛酸和/或阿拉伯糖侧链,并且使改性的木聚糖吸附在基材上,酶促改性木聚糖。 基材可以是纤维素基质如纸浆或纸或非纤维素基质。 酶能够除去足够数量的木聚糖侧链,以降低木聚糖的水溶性,诱导木聚糖沉淀并允许木聚糖吸附到其它底物上。 还提供了将木聚糖修饰和吸附到纤维素材料上的制浆方法,以及含有改性木聚糖的产品。
    • 74. 发明授权
    • Cellulolytic enzymes, nucleic acids encoding them and methods for making and using them
    • 纤维素分解酶,编码它们的核酸和制备和使用它们的方法
    • US08101393B2
    • 2012-01-24
    • US12278958
    • 2006-12-08
    • Kevin A. GrayLishan ZhaoMichelle H. Cayouette
    • Kevin A. GrayLishan ZhaoMichelle H. Cayouette
    • C12N9/42C12N15/00C12P7/10C12P21/06C07H21/04C07H5/06C07K1/00A61K38/47A23L2/00A23L1/202A23L1/30
    • C12N9/2437C12N9/2402C12N9/2405C12N9/248C12Y302/01004C12Y302/01006C12Y302/01008C12Y302/01021C12Y302/01023C12Y302/01039C12Y302/01055C12Y302/01091Y02E50/16Y02E50/17Y10T428/249921
    • The invention provides polypeptides having any cellulolytic activity, e.g., a cellulase activity, a endoglucanase, a cellobiohydrolase, a beta-glucosidase, a xylanase, a mannanse, a β-xylosidase, an arabinofuranosidase, and/or an oligomerase activity, polynucleotides encoding these polypeptides, and methods of making and using these polynucleotides and polypeptides. In one aspect, the invention is directed to polypeptides having any cellulolytic activity, e.g., a cellulase activity, e.g., endoglucanase, cellobiohydrolase, beta-glucosidase, xylanase, mannanse, β-xylosidase, arabinofuranosidase, and/or oligomerase activity, including thermostable and thermotolerant activity, and polynucleotides encoding these enzymes, and making and using these polynucleotides and polypeptides. In one aspect, the invention provides polypeptides having an oligomerase activity, e.g., enzymes that convert recalcitrant soluble oligomers to fermentable sugars in the saccharification of biomass. The polypeptides of the invention can be used in a variety of pharmaceutical, agricultural, food and feed processing and industrial contexts. The invention also provides compositions or products of manufacture comprising mixtures of enzymes comprising at least one enzyme of this invention.
    • 本发明提供了具有任何纤维素分解活性的多肽,例如纤维素酶活性,内切葡聚糖酶,纤维二糖水解酶,β-葡糖苷酶,木聚糖酶,甘露聚糖酶,β-半乳糖苷酶,阿拉伯呋喃糖苷酶和/或寡聚酶活性,编码 这些多肽,以及制备和使用这些多核苷酸和多肽的方法。 在一个方面,本发明涉及具有任何纤维素分解活性的多肽,例如纤维素酶活性,例如内切葡聚糖酶,纤维二糖水解酶,β-葡糖苷酶,木聚糖酶,甘露聚糖,β-木糖苷酶,阿拉伯呋喃糖苷酶和/或寡聚酶活性,包括热稳定性 和耐热活性,以及​​编码这些酶的多核苷酸,以及制备和使用这些多核苷酸和多肽。 一方面,本发明提供了具有寡聚酶活性的多肽,例如在生物质糖化中将顽固性可溶性寡聚物转化为可发酵糖的酶。 本发明的多肽可用于各种药物,农业,食品和饲料加工以及工业环境中。 本发明还提供包含本发明的至少一种酶的酶的混合物的组合物或制品。
    • 80. 发明申请
    • Novel method to isolate mutants and to clone the complementing gene
    • 分离突变体和克隆补体基因的新方法
    • US20030175893A1
    • 2003-09-18
    • US10419969
    • 2003-04-22
    • DANSICO INGREDIENTS A/S
    • Leendert Hendrik De GraaffHenrietta Catharina Van Den BroeckJacob Visser
    • C12P021/02C07H021/04C12N001/16C12N015/74C07K014/38
    • C12N15/635C07K14/38C07K14/4705C12N9/0006C12N9/2434C12N9/248C12N9/88C12N15/1027C12N15/63C12N15/65C12N15/80C12Q1/02C12Y302/01003C12Y302/01008C12Y302/01015C12Y302/01037C12Y302/01055C12Y302/01099
    • The subject invention lies in the field of microorganism mutation and selection of the mutants. In particular the invention is directed at obtaining metabolic mutants in a simple, direct and specific manner. In a preferred embodiment it is also possible to obtain desired mutants not comprising recombinant DNA, thereby facilitating incorporation thereof in products for human consumption or application, due to shorter legislative procedures. The method according to the invention involves random mutation and specific selection of the desired metabolic mutant. A nucleic acid cassette comprising a nucleic acid sequence encoding a bidirectional marker, said nucleic acid cassette further comprising a basic transcriptional unit operatively linked to the nucleic acid sequence encoding the bidirectional marker and said nucleic acid cassette further comprising an inducible enhancer or activator sequence linked to the basic transcription unit in such a manner that upon induction of the enhancer or activator sequence the bidirectional marker encoding nucleic acid sequence is expressed, said inducible enhancer or activator sequence being derived from a gene associated with activity of part of metabolism, said inducible enhancer or activator sequence being derived from a gene associated with metabolism is claimed as is application thereof in a selection method for mutants. In addition a regulator gene xlnR encoding an activating regulator of an inducible enhancer or activator sequence and application of said gene and/or its expression product in overexpression of homologous or heterologous protein or peptide is described. Knockout mutants wherein said gene is absent or inactivated and mutants with increased or decreased DNA binding capacity are also claimed.
    • 本发明在于微生物突变和突变体的选择领域。 特别地,本发明涉及以简单,直接和具体的方式获得代谢突变体。 在优选的实施方案中,由于较短的立法程序,也可以获得不包含重组DNA的所需突变体,从而便于将其并入用于人类消费或应用的产品中。 根据本发明的方法涉及随机突变和所需代谢突变体的特异性选择。 一种核酸盒,其包含编码双向标记的核酸序列,所述核酸盒还包含与编码双向标记的核酸序列可操作地连接的碱性转录单位,并且所述核酸盒还包含可诱导增强子或活化剂序列 所述基本转录单元以这样的方式,即在诱导增强子或活化剂序列时,表达编码双向标记核酸序列的核酸序列,所述诱导型增强子或活化子序列衍生自与部分代谢活性相关的基因,所述诱导型增强子或 要求从与代谢相关的基因衍生的活化剂序列作为其在突变体的选择方法中的应用。 此外,描述了编码诱导型增强子或激活物序列的活化调节物的调节基因xlnR以及所述基因和/或其表达产物在同源或异源蛋白质或肽的过表达中的应用。 其中所述基因不存在或失活的敲除突变体以及DNA结合能力增加或降低的突变体也被要求保护。